Testing Products for ASTM D624
APP-D624Measures the resistance of rubber to the initiation and propagation of a tear. Uses several die shapes (Die B, C, or T). This configuration focuses on the Newton-Series control architecture to ensure high-fidelity data acquisition. Utilizing a 32-bit digital signal processor, the system provides a superior Signal-to-Noise Ratio (SNR), which is essential for capturing precise material transitions that lower-resolution systems often miss.
The load frame for this application has been selected to provide the most cost-effective solution capable of meeting the standard’s peak force requirements. While TestResources offers a wide range of frame geometries, this specific selection represents the optimal balance between laboratory CAPEX and technical compliance. Any frame in our catalog meeting the minimum load rating will adhere to the standard; however, this configuration is our primary recommendation for those seeking a reliable, streamlined testing platform without unnecessary complexity.=
The Nick Factor: The depth of the pre-cut nick is the most sensitive variable in the test.
Use a dedicated Die Cutter with a fresh blade for every batch to ensure consistent nicks.
Regulatory & Test Details
| App Id | APP-D624 |
|---|---|
| App Standard | ASTM D624 |
| Standard Organization | ASTM |
| Test Type | Tear |
| Material Type | Rubber |
| Specimen Type | Nicked Crescent / Die C |
| Industry Type | Industrial Seals, Tires |
| Min Force Kn | 0.5 |
| Max Force Kn | 2 |
| Max Spd Mm/m | 500 |
| Expert Spd | Matches D412 for rubber tear consistency. |
| Mach Recommend | TestResources 100-500-6 | Single Column UTM | 2.2 kN 150 mm |
| Pointer App Software | N-ASTM-D624 |
| Pointer Fixture Family | G-ASTM-D624 |
| Pointer Strain Family | E-ASTM-D624 |
Implementation Commentary
Tear strength is highly directional; always test both with and across the grain of the rubber.
Common Pitfalls
Using a dull die blade, which creates a jagged nick and premature failure.